Re: HPT374 IDE problem with 2.6.21.* kernels

[Geller Sandor <wildy@petra.hos.u-szeged.hu>]

On Sat, 2 Jun 2007, Sergei Shtylyov wrote:

> Hello.
>
> Andrew Morton wrote:
>
> > > I saw a similar report yesterday with '2.6.21.1 - 97% wait time on IDE 
> > > operations' subject.
>
> > > After upgrading from 2.6.20.7 kernel to 2.6.21.1 my system started to 
> > > reset infrequenly the IDE bus. In the syslog DMA timeout, resetting IDE 
> > > bus messages appeared. I've changed the two disks attached to the HPT374 
> > > controller, and always the first disk had problems. I've replaced cables, 
> > > plugged the disks into other IDE ports, but it was only a matter of time 
> > > to experience an IDE reset. When I upgraded to 2.6.21.3 the resets became 
> > > much more frequent, this time even DMA was disabled too on the first disk. 
> > > I turned DMA back Manually with hdparm, and a few seconds of intense IO 
> > > activity resulted in another IDE reset.
>
> > > Reverting back to 2.6.20.12 the problem seems to be gone. BTW I'm using 
> > > the PATA driver for the HTP374, not the libata one.
>
> > > Is this a known problem/ is there a way I can help locating the cause of 
> > > the problem?
>
>   Yes, please post the boot log and the IDE reset log too for starters...
>
> > (cc's added)
>
> WBR, Sergei

Hi,

The log of a typical IDE reset is available here:

http://petra.hos.u-szeged.hu/~wildy/syslog.gz

This was the worst case: the IDE bus was resetted during the system boot.

  Geller Sandor <wildy@petra.hos.u-szeged.hu>
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